Hi Steve,
I already received the feedback from the Applications Engineer of AD8390/AD8390A. He said that although the part was design for ADSL applications, he doesn't anticipate any issues with your application. He recommends though that you carefully look into power dissipation since you require the full drive capacity of the device. Also, I regret to inform you that there isn't a SPICE model available for AD8390.AD8390A.
Best regards,
Neil